[glib: 3/3] Merge branch '2292-fix-ci-common-ancestor' into 'master'

[Philip Withnall <pwithnall src gnome org>]

commit 11aefe072ae409c52a7f27960f56c68ef12c0f7b
Merge: ace643f87 bbe47331a
Author: Philip Withnall <philip tecnocode co uk>
Date:   Mon Jan 18 12:39:08 2021 +0000

    Merge branch '2292-fix-ci-common-ancestor' into 'master'
    
    Use explicitly the source branch of CI to get the common ancestor
    
    Closes #2292
    
    See merge request GNOME/glib!1869

 .gitlab-ci/run-check-todos.sh        | 25 +------------------------
 .gitlab-ci/run-style-check-diff.sh   | 24 +-----------------------
 .gitlab-ci/search-common-ancestor.sh | 34 ++++++++++++++++++++++++++++++++++
 3 files changed, 36 insertions(+), 47 deletions(-)
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